天然金刚石刀具前刀面的表面粗糙度控制技术

Surface roughness control technology of rake face of natural diamond tool

介绍了金刚石刀具的发展和技术特点,设计了一种天然金刚石刀具前刀面表面粗糙度修磨控制方法,并通过工艺实验完成了对金刚石刀具的修磨。结果表明:验证了(100)面的金刚石的难磨方向,沿此方向加工后金刚石的表面粗糙度值较低、磨削热较多;易磨方向表面粗糙度较差、磨削热较少。优化修磨角度修磨后,金刚石刀具前刀面表面粗糙度R_a值可达0.3 nm,将其应用在超精密切削中效果良好。

The development and technical characteristics of diamond tools are introduced. A grinding method for controlling the surface roughness of the rake face of natural diamond tools is designed. The results show that for the diamond (100) surface, the surface roughness is good along "hard" direction with more grinding heat while poor in the "soft" direction with less grinding heat. By optimizing the grinding angle, the surface roughness of the rake face of the diamond tool can reach a good R a value of 0.3 nm. Good application effects are presented in the ultra-precision cutting.